clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(custom_attribute)]
   5 #![feature(rustc_private)]
   6 #![feature(slice_patterns)]
   7 #![feature(stmt_expr_attributes)]
   8 #![feature(conservative_impl_trait)]
   9 #![feature(range_contains)]
  10 #![feature(macro_vis_matcher)]
  11 #![allow(unknown_lints, indexing_slicing, shadow_reuse, missing_docs_in_private_items)]
  12 #![recursion_limit = "256"]
  13 // FIXME(mark-i-m) remove after i128 stablization merges
  14 #![allow(stable_features)]
  15 #![feature(i128, i128_type)]
  16 #![feature(iterator_find_map)]
  17
  18
  19 #[macro_use]
  20 extern crate rustc;
  21 extern crate rustc_typeck;
  22 extern crate rustc_target;
  23 extern crate syntax;
  24 extern crate syntax_pos;
  25
  26 extern crate toml;
  27
  28 // for unicode nfc normalization
  29
  30 extern crate unicode_normalization;
  31
  32 // for semver check in attrs.rs
  33
  34 extern crate semver;
  35
  36 // for regex checking
  37
  38 extern crate regex_syntax;
  39
  40 // for finding minimal boolean expressions
  41
  42 extern crate quine_mc_cluskey;
  43
  44 extern crate rustc_errors;
  45 extern crate rustc_plugin;
  46
  47 #[macro_use]
  48 extern crate matches as matches_macro;
  49
  50 extern crate serde;
  51 #[macro_use]
  52 extern crate serde_derive;
  53
  54 #[macro_use]
  55 extern crate lazy_static;
  56
  57 extern crate itertools;
  58 extern crate pulldown_cmark;
  59 extern crate url;
  60
  61 #[macro_use]
  62 extern crate if_chain;
  63
  64 macro_rules! declare_clippy_lint {
  65     { pub $name:tt, style, $description:tt } => {
  66         declare_lint! { pub $name, Warn, $description }
  67     };
  68     { pub $name:tt, correctness, $description:tt } => {
  69         declare_lint! { pub $name, Deny, $description }
  70     };
  71     { pub $name:tt, complexity, $description:tt } => {
  72         declare_lint! { pub $name, Warn, $description }
  73     };
  74     { pub $name:tt, perf, $description:tt } => {
  75         declare_lint! { pub $name, Warn, $description }
  76     };
  77     { pub $name:tt, pedantic, $description:tt } => {
  78         declare_lint! { pub $name, Allow, $description }
  79     };
  80     { pub $name:tt, restriction, $description:tt } => {
  81         declare_lint! { pub $name, Allow, $description }
  82     };
  83     { pub $name:tt, nursery, $description:tt } => {
  84         declare_lint! { pub $name, Allow, $description }
  85     };
  86     { pub $name:tt, internal, $description:tt } => {
  87         declare_lint! { pub $name, Allow, $description }
  88     };
  89     { pub $name:tt, internal_warn, $description:tt } => {
  90         declare_lint! { pub $name, Warn, $description }
  91     };
  92 }
  93
  94 pub mod consts;
  95 #[macro_use]
  96 pub mod utils;
  97
  98 // begin lints modules, do not remove this comment, it’s used in `update_lints`
  99 pub mod approx_const;
 100 pub mod arithmetic;
 101 pub mod array_indexing;
 102 pub mod assign_ops;
 103 pub mod attrs;
 104 pub mod bit_mask;
 105 pub mod blacklisted_name;
 106 pub mod block_in_if_condition;
 107 pub mod booleans;
 108 pub mod bytecount;
 109 pub mod collapsible_if;
 110 pub mod const_static_lifetime;
 111 pub mod copies;
 112 pub mod cyclomatic_complexity;
 113 pub mod derive;
 114 pub mod doc;
 115 pub mod double_comparison;
 116 pub mod double_parens;
 117 pub mod drop_forget_ref;
 118 pub mod else_if_without_else;
 119 pub mod empty_enum;
 120 pub mod entry;
 121 pub mod enum_clike;
 122 pub mod enum_glob_use;
 123 pub mod enum_variants;
 124 pub mod eq_op;
 125 pub mod erasing_op;
 126 pub mod escape;
 127 pub mod eta_reduction;
 128 pub mod eval_order_dependence;
 129 pub mod excessive_precision;
 130 pub mod explicit_write;
 131 pub mod fallible_impl_from;
 132 pub mod format;
 133 pub mod formatting;
 134 pub mod functions;
 135 pub mod identity_conversion;
 136 pub mod identity_op;
 137 pub mod if_let_redundant_pattern_matching;
 138 pub mod if_not_else;
 139 pub mod infallible_destructuring_match;
 140 pub mod infinite_iter;
 141 pub mod inline_fn_without_body;
 142 pub mod int_plus_one;
 143 pub mod invalid_ref;
 144 pub mod items_after_statements;
 145 pub mod large_enum_variant;
 146 pub mod len_zero;
 147 pub mod let_if_seq;
 148 pub mod lifetimes;
 149 pub mod literal_representation;
 150 pub mod loops;
 151 pub mod map_clone;
 152 pub mod map_unit_fn;
 153 pub mod matches;
 154 pub mod mem_forget;
 155 pub mod methods;
 156 pub mod minmax;
 157 pub mod misc;
 158 pub mod misc_early;
 159 pub mod missing_doc;
 160 pub mod mut_mut;
 161 pub mod mut_reference;
 162 pub mod mutex_atomic;
 163 pub mod needless_bool;
 164 pub mod needless_borrow;
 165 pub mod needless_borrowed_ref;
 166 pub mod needless_continue;
 167 pub mod needless_pass_by_value;
 168 pub mod needless_update;
 169 pub mod neg_multiply;
 170 pub mod new_without_default;
 171 pub mod no_effect;
 172 pub mod non_expressive_names;
 173 pub mod ok_if_let;
 174 pub mod open_options;
 175 pub mod overflow_check_conditional;
 176 pub mod panic;
 177 pub mod partialeq_ne_impl;
 178 pub mod precedence;
 179 pub mod ptr;
 180 pub mod question_mark;
 181 pub mod ranges;
 182 pub mod redundant_field_names;
 183 pub mod reference;
 184 pub mod regex;
 185 pub mod replace_consts;
 186 pub mod returns;
 187 pub mod serde_api;
 188 pub mod shadow;
 189 pub mod strings;
 190 pub mod suspicious_trait_impl;
 191 pub mod swap;
 192 pub mod temporary_assignment;
 193 pub mod transmute;
 194 pub mod types;
 195 pub mod unicode;
 196 pub mod unsafe_removed_from_name;
 197 pub mod unused_io_amount;
 198 pub mod unused_label;
 199 pub mod use_self;
 200 pub mod vec;
 201 pub mod write;
 202 pub mod zero_div_zero;
 203 // end lints modules, do not remove this comment, it’s used in `update_lints`
 204
 205 mod reexport {
 206     pub use syntax::ast::{Name, NodeId};
 207 }
 208
 209 #[cfg_attr(rustfmt, rustfmt_skip)]
 210 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 211     let conf = match utils::conf::file_from_args(reg.args()) {
 212         Ok(file_name) => {
 213             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 214             // do not require the file to exist
 215             let file_name = if let Some(file_name) = file_name {
 216                 Some(file_name)
 217             } else {
 218                 match utils::conf::lookup_conf_file() {
 219                     Ok(path) => path,
 220                     Err(error) => {
 221                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 222                         None
 223                     }
 224                 }
 225             };
 226
 227             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 228                 reg.sess
 229                     .local_crate_source_file
 230                     .as_ref()
 231                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 232                     .unwrap_or_default()
 233                     .join(file_name)
 234             } else {
 235                 file_name
 236             });
 237
 238             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 239
 240             // all conf errors are non-fatal, we just use the default conf in case of error
 241             for error in errors {
 242                 reg.sess.struct_err(&format!("error reading Clippy's configuration file `{}`: {}", file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""), error)).emit();
 243             }
 244
 245             conf
 246         }
 247         Err((err, span)) => {
 248             reg.sess.struct_span_err(span, err)
 249                     .span_note(span, "Clippy will use default configuration")
 250                     .emit();
 251             toml::from_str("").expect("we never error on empty config files")
 252         }
 253     };
 254
 255     let mut store = reg.sess.lint_store.borrow_mut();
 256     store.register_removed(
 257         "should_assert_eq",
 258         "`assert!()` will be more flexible with RFC 2011",
 259     );
 260     store.register_removed(
 261         "extend_from_slice",
 262         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 263     );
 264     store.register_removed(
 265         "range_step_by_zero",
 266         "`iterator.step_by(0)` panics nowadays",
 267     );
 268     store.register_removed(
 269         "unstable_as_slice",
 270         "`Vec::as_slice` has been stabilized in 1.7",
 271     );
 272     store.register_removed(
 273         "unstable_as_mut_slice",
 274         "`Vec::as_mut_slice` has been stabilized in 1.7",
 275     );
 276     store.register_removed(
 277         "str_to_string",
 278         "using `str::to_string` is common even today and specialization will likely happen soon",
 279     );
 280     store.register_removed(
 281         "string_to_string",
 282         "using `string::to_string` is common even today and specialization will likely happen soon",
 283     );
 284     store.register_removed(
 285         "misaligned_transmute",
 286         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 287     );
 288     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 289
 290     reg.register_late_lint_pass(box serde_api::Serde);
 291     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 292     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 293     reg.register_late_lint_pass(box utils::inspector::Pass);
 294     reg.register_late_lint_pass(box utils::author::Pass);
 295     reg.register_late_lint_pass(box types::TypePass);
 296     reg.register_late_lint_pass(box booleans::NonminimalBool);
 297     reg.register_late_lint_pass(box eq_op::EqOp);
 298     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 299     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 300     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 301     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 302     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 303     reg.register_late_lint_pass(box ptr::PointerPass);
 304     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 305     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 306     reg.register_late_lint_pass(box approx_const::Pass);
 307     reg.register_late_lint_pass(box misc::Pass);
 308     reg.register_early_lint_pass(box precedence::Precedence);
 309     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 310     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 311     reg.register_late_lint_pass(box identity_op::IdentityOp);
 312     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 313     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 314     reg.register_late_lint_pass(box mut_mut::MutMut);
 315     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 316     reg.register_late_lint_pass(box len_zero::LenZero);
 317     reg.register_late_lint_pass(box attrs::AttrPass);
 318     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 319     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 320     reg.register_late_lint_pass(box unicode::Unicode);
 321     reg.register_late_lint_pass(box strings::StringAdd);
 322     reg.register_early_lint_pass(box returns::ReturnPass);
 323     reg.register_late_lint_pass(box methods::Pass);
 324     reg.register_late_lint_pass(box shadow::Pass);
 325     reg.register_late_lint_pass(box types::LetPass);
 326     reg.register_late_lint_pass(box types::UnitCmp);
 327     reg.register_late_lint_pass(box loops::Pass);
 328     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 329     reg.register_late_lint_pass(box entry::HashMapLint);
 330     reg.register_late_lint_pass(box ranges::Pass);
 331     reg.register_late_lint_pass(box types::CastPass);
 332     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 333     reg.register_late_lint_pass(box matches::MatchPass);
 334     reg.register_late_lint_pass(box minmax::MinMaxPass);
 335     reg.register_late_lint_pass(box open_options::NonSensical);
 336     reg.register_late_lint_pass(box zero_div_zero::Pass);
 337     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 338     reg.register_late_lint_pass(box needless_update::Pass);
 339     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 340     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 341     reg.register_late_lint_pass(box no_effect::Pass);
 342     reg.register_late_lint_pass(box map_clone::Pass);
 343     reg.register_late_lint_pass(box temporary_assignment::Pass);
 344     reg.register_late_lint_pass(box transmute::Transmute);
 345     reg.register_late_lint_pass(
 346         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 347     );
 348     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 349     reg.register_early_lint_pass(box misc_early::MiscEarly);
 350     reg.register_late_lint_pass(box array_indexing::ArrayIndexing);
 351     reg.register_late_lint_pass(box panic::Pass);
 352     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 353     reg.register_late_lint_pass(box derive::Derive);
 354     reg.register_late_lint_pass(box types::CharLitAsU8);
 355     reg.register_late_lint_pass(box write::Pass);
 356     reg.register_late_lint_pass(box vec::Pass);
 357     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 358         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 359     });
 360     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 361     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 362     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 363     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 364     reg.register_late_lint_pass(box regex::Pass::default());
 365     reg.register_late_lint_pass(box copies::CopyAndPaste);
 366     reg.register_late_lint_pass(box format::Pass);
 367     reg.register_early_lint_pass(box formatting::Formatting);
 368     reg.register_late_lint_pass(box swap::Swap);
 369     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 370     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 371     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 372     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 373     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 374     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 375     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 376     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 377     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 378     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 379     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 380     reg.register_late_lint_pass(box mem_forget::MemForget);
 381     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 382     reg.register_late_lint_pass(box assign_ops::AssignOps);
 383     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 384     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 385     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 386     reg.register_late_lint_pass(box ok_if_let::Pass);
 387     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 388     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 389     reg.register_early_lint_pass(box reference::Pass);
 390     reg.register_early_lint_pass(box double_parens::DoubleParens);
 391     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 392     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 393     reg.register_late_lint_pass(box explicit_write::Pass);
 394     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 395     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 396     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 397             conf.literal_representation_threshold
 398     ));
 399     reg.register_late_lint_pass(box use_self::UseSelf);
 400     reg.register_late_lint_pass(box bytecount::ByteCount);
 401     reg.register_late_lint_pass(box infinite_iter::Pass);
 402     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 403     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 404     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 405     reg.register_late_lint_pass(box types::ImplicitHasher);
 406     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 407     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 408     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 409     reg.register_late_lint_pass(box types::UnitArg);
 410     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 411     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 412     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 413     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 414     reg.register_late_lint_pass(box map_unit_fn::Pass);
 415     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 416
 417
 418     reg.register_lint_group("clippy_restriction", vec![
 419         arithmetic::FLOAT_ARITHMETIC,
 420         arithmetic::INTEGER_ARITHMETIC,
 421         array_indexing::INDEXING_SLICING,
 422         assign_ops::ASSIGN_OPS,
 423         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 424         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 425         mem_forget::MEM_FORGET,
 426         methods::CLONE_ON_REF_PTR,
 427         methods::OPTION_UNWRAP_USED,
 428         methods::RESULT_UNWRAP_USED,
 429         methods::WRONG_PUB_SELF_CONVENTION,
 430         misc::FLOAT_CMP_CONST,
 431         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 432         shadow::SHADOW_REUSE,
 433         shadow::SHADOW_SAME,
 434         shadow::SHADOW_UNRELATED,
 435         strings::STRING_ADD,
 436         write::PRINT_STDOUT,
 437         write::USE_DEBUG,
 438     ]);
 439
 440     reg.register_lint_group("clippy_pedantic", vec![
 441         attrs::INLINE_ALWAYS,
 442         copies::MATCH_SAME_ARMS,
 443         derive::EXPL_IMPL_CLONE_ON_COPY,
 444         doc::DOC_MARKDOWN,
 445         empty_enum::EMPTY_ENUM,
 446         enum_glob_use::ENUM_GLOB_USE,
 447         enum_variants::PUB_ENUM_VARIANT_NAMES,
 448         enum_variants::STUTTER,
 449         if_not_else::IF_NOT_ELSE,
 450         infinite_iter::MAYBE_INFINITE_ITER,
 451         items_after_statements::ITEMS_AFTER_STATEMENTS,
 452         matches::SINGLE_MATCH_ELSE,
 453         methods::FILTER_MAP,
 454         methods::OPTION_MAP_UNWRAP_OR,
 455         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 456         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 457         misc::USED_UNDERSCORE_BINDING,
 458         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 459         mut_mut::MUT_MUT,
 460         needless_continue::NEEDLESS_CONTINUE,
 461         non_expressive_names::SIMILAR_NAMES,
 462         replace_consts::REPLACE_CONSTS,
 463         strings::STRING_ADD_ASSIGN,
 464         types::CAST_POSSIBLE_TRUNCATION,
 465         types::CAST_POSSIBLE_WRAP,
 466         types::CAST_PRECISION_LOSS,
 467         types::CAST_SIGN_LOSS,
 468         types::INVALID_UPCAST_COMPARISONS,
 469         types::LINKEDLIST,
 470         unicode::NON_ASCII_LITERAL,
 471         unicode::UNICODE_NOT_NFC,
 472         use_self::USE_SELF,
 473     ]);
 474
 475     reg.register_lint_group("clippy_internal", vec![
 476         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 477         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 478     ]);
 479
 480     reg.register_lint_group("clippy", vec![
 481         approx_const::APPROX_CONSTANT,
 482         array_indexing::OUT_OF_BOUNDS_INDEXING,
 483         assign_ops::ASSIGN_OP_PATTERN,
 484         assign_ops::MISREFACTORED_ASSIGN_OP,
 485         attrs::DEPRECATED_SEMVER,
 486         attrs::USELESS_ATTRIBUTE,
 487         bit_mask::BAD_BIT_MASK,
 488         bit_mask::INEFFECTIVE_BIT_MASK,
 489         bit_mask::VERBOSE_BIT_MASK,
 490         blacklisted_name::BLACKLISTED_NAME,
 491         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 492         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 493         booleans::LOGIC_BUG,
 494         booleans::NONMINIMAL_BOOL,
 495         bytecount::NAIVE_BYTECOUNT,
 496         collapsible_if::COLLAPSIBLE_IF,
 497         const_static_lifetime::CONST_STATIC_LIFETIME,
 498         copies::IF_SAME_THEN_ELSE,
 499         copies::IFS_SAME_COND,
 500         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 501         derive::DERIVE_HASH_XOR_EQ,
 502         double_comparison::DOUBLE_COMPARISONS,
 503         double_parens::DOUBLE_PARENS,
 504         drop_forget_ref::DROP_COPY,
 505         drop_forget_ref::DROP_REF,
 506         drop_forget_ref::FORGET_COPY,
 507         drop_forget_ref::FORGET_REF,
 508         entry::MAP_ENTRY,
 509         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 510         enum_variants::ENUM_VARIANT_NAMES,
 511         enum_variants::MODULE_INCEPTION,
 512         eq_op::EQ_OP,
 513         eq_op::OP_REF,
 514         erasing_op::ERASING_OP,
 515         escape::BOXED_LOCAL,
 516         eta_reduction::REDUNDANT_CLOSURE,
 517         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 518         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 519         excessive_precision::EXCESSIVE_PRECISION,
 520         explicit_write::EXPLICIT_WRITE,
 521         format::USELESS_FORMAT,
 522         formatting::POSSIBLE_MISSING_COMMA,
 523         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 524         formatting::SUSPICIOUS_ELSE_FORMATTING,
 525         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 526         functions::TOO_MANY_ARGUMENTS,
 527         identity_conversion::IDENTITY_CONVERSION,
 528         identity_op::IDENTITY_OP,
 529         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 530         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 531         infinite_iter::INFINITE_ITER,
 532         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 533         int_plus_one::INT_PLUS_ONE,
 534         invalid_ref::INVALID_REF,
 535         large_enum_variant::LARGE_ENUM_VARIANT,
 536         len_zero::LEN_WITHOUT_IS_EMPTY,
 537         len_zero::LEN_ZERO,
 538         let_if_seq::USELESS_LET_IF_SEQ,
 539         lifetimes::NEEDLESS_LIFETIMES,
 540         lifetimes::UNUSED_LIFETIMES,
 541         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 542         literal_representation::LARGE_DIGIT_GROUPS,
 543         literal_representation::UNREADABLE_LITERAL,
 544         loops::EMPTY_LOOP,
 545         loops::EXPLICIT_COUNTER_LOOP,
 546         loops::EXPLICIT_INTO_ITER_LOOP,
 547         loops::EXPLICIT_ITER_LOOP,
 548         loops::FOR_KV_MAP,
 549         loops::FOR_LOOP_OVER_OPTION,
 550         loops::FOR_LOOP_OVER_RESULT,
 551         loops::ITER_NEXT_LOOP,
 552         loops::MANUAL_MEMCPY,
 553         loops::MUT_RANGE_BOUND,
 554         loops::NEEDLESS_RANGE_LOOP,
 555         loops::NEVER_LOOP,
 556         loops::REVERSE_RANGE_LOOP,
 557         loops::UNUSED_COLLECT,
 558         loops::WHILE_IMMUTABLE_CONDITION,
 559         loops::WHILE_LET_LOOP,
 560         loops::WHILE_LET_ON_ITERATOR,
 561         map_clone::MAP_CLONE,
 562         map_unit_fn::OPTION_MAP_UNIT_FN,
 563         map_unit_fn::RESULT_MAP_UNIT_FN,
 564         matches::MATCH_AS_REF,
 565         matches::MATCH_BOOL,
 566         matches::MATCH_OVERLAPPING_ARM,
 567         matches::MATCH_REF_PATS,
 568         matches::MATCH_WILD_ERR_ARM,
 569         matches::SINGLE_MATCH,
 570         methods::CHARS_LAST_CMP,
 571         methods::CHARS_NEXT_CMP,
 572         methods::CLONE_DOUBLE_REF,
 573         methods::CLONE_ON_COPY,
 574         methods::FILTER_NEXT,
 575         methods::GET_UNWRAP,
 576         methods::ITER_CLONED_COLLECT,
 577         methods::ITER_NTH,
 578         methods::ITER_SKIP_NEXT,
 579         methods::NEW_RET_NO_SELF,
 580         methods::OK_EXPECT,
 581         methods::OPTION_MAP_OR_NONE,
 582         methods::OR_FUN_CALL,
 583         methods::SEARCH_IS_SOME,
 584         methods::SHOULD_IMPLEMENT_TRAIT,
 585         methods::SINGLE_CHAR_PATTERN,
 586         methods::STRING_EXTEND_CHARS,
 587         methods::TEMPORARY_CSTRING_AS_PTR,
 588         methods::UNNECESSARY_FOLD,
 589         methods::USELESS_ASREF,
 590         methods::WRONG_SELF_CONVENTION,
 591         minmax::MIN_MAX,
 592         misc::CMP_NAN,
 593         misc::CMP_OWNED,
 594         misc::FLOAT_CMP,
 595         misc::MODULO_ONE,
 596         misc::REDUNDANT_PATTERN,
 597         misc::SHORT_CIRCUIT_STATEMENT,
 598         misc::TOPLEVEL_REF_ARG,
 599         misc::ZERO_PTR,
 600         misc_early::BUILTIN_TYPE_SHADOW,
 601         misc_early::DOUBLE_NEG,
 602         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 603         misc_early::MIXED_CASE_HEX_LITERALS,
 604         misc_early::REDUNDANT_CLOSURE_CALL,
 605         misc_early::UNNEEDED_FIELD_PATTERN,
 606         misc_early::ZERO_PREFIXED_LITERAL,
 607         mut_reference::UNNECESSARY_MUT_PASSED,
 608         mutex_atomic::MUTEX_ATOMIC,
 609         needless_bool::BOOL_COMPARISON,
 610         needless_bool::NEEDLESS_BOOL,
 611         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 612         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 613         needless_update::NEEDLESS_UPDATE,
 614         neg_multiply::NEG_MULTIPLY,
 615         new_without_default::NEW_WITHOUT_DEFAULT,
 616         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 617         no_effect::NO_EFFECT,
 618         no_effect::UNNECESSARY_OPERATION,
 619         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 620         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 621         ok_if_let::IF_LET_SOME_RESULT,
 622         open_options::NONSENSICAL_OPEN_OPTIONS,
 623         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 624         panic::PANIC_PARAMS,
 625         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 626         precedence::PRECEDENCE,
 627         ptr::CMP_NULL,
 628         ptr::MUT_FROM_REF,
 629         ptr::PTR_ARG,
 630         question_mark::QUESTION_MARK,
 631         ranges::ITERATOR_STEP_BY_ZERO,
 632         ranges::RANGE_MINUS_ONE,
 633         ranges::RANGE_ZIP_WITH_LEN,
 634         redundant_field_names::REDUNDANT_FIELD_NAMES,
 635         reference::DEREF_ADDROF,
 636         regex::INVALID_REGEX,
 637         regex::REGEX_MACRO,
 638         regex::TRIVIAL_REGEX,
 639         returns::LET_AND_RETURN,
 640         returns::NEEDLESS_RETURN,
 641         serde_api::SERDE_API_MISUSE,
 642         strings::STRING_LIT_AS_BYTES,
 643         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 644         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 645         swap::ALMOST_SWAPPED,
 646         swap::MANUAL_SWAP,
 647         temporary_assignment::TEMPORARY_ASSIGNMENT,
 648         transmute::CROSSPOINTER_TRANSMUTE,
 649         transmute::TRANSMUTE_BYTES_TO_STR,
 650         transmute::TRANSMUTE_INT_TO_BOOL,
 651         transmute::TRANSMUTE_INT_TO_CHAR,
 652         transmute::TRANSMUTE_INT_TO_FLOAT,
 653         transmute::TRANSMUTE_PTR_TO_PTR,
 654         transmute::TRANSMUTE_PTR_TO_REF,
 655         transmute::USELESS_TRANSMUTE,
 656         transmute::WRONG_TRANSMUTE,
 657         types::ABSURD_EXTREME_COMPARISONS,
 658         types::BORROWED_BOX,
 659         types::BOX_VEC,
 660         types::CAST_LOSSLESS,
 661         types::CAST_PTR_ALIGNMENT,
 662         types::CHAR_LIT_AS_U8,
 663         types::IMPLICIT_HASHER,
 664         types::LET_UNIT_VALUE,
 665         types::OPTION_OPTION,
 666         types::TYPE_COMPLEXITY,
 667         types::UNIT_ARG,
 668         types::UNIT_CMP,
 669         types::UNNECESSARY_CAST,
 670         unicode::ZERO_WIDTH_SPACE,
 671         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 672         unused_io_amount::UNUSED_IO_AMOUNT,
 673         unused_label::UNUSED_LABEL,
 674         vec::USELESS_VEC,
 675         write::PRINT_LITERAL,
 676         write::PRINT_WITH_NEWLINE,
 677         write::PRINTLN_EMPTY_STRING,
 678         write::WRITE_LITERAL,
 679         write::WRITE_WITH_NEWLINE,
 680         write::WRITELN_EMPTY_STRING,
 681         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 682     ]);
 683
 684     reg.register_lint_group("clippy_style", vec![
 685         assign_ops::ASSIGN_OP_PATTERN,
 686         bit_mask::VERBOSE_BIT_MASK,
 687         blacklisted_name::BLACKLISTED_NAME,
 688         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 689         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 690         collapsible_if::COLLAPSIBLE_IF,
 691         const_static_lifetime::CONST_STATIC_LIFETIME,
 692         enum_variants::ENUM_VARIANT_NAMES,
 693         enum_variants::MODULE_INCEPTION,
 694         eq_op::OP_REF,
 695         eta_reduction::REDUNDANT_CLOSURE,
 696         excessive_precision::EXCESSIVE_PRECISION,
 697         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 698         formatting::SUSPICIOUS_ELSE_FORMATTING,
 699         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 700         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 701         len_zero::LEN_WITHOUT_IS_EMPTY,
 702         len_zero::LEN_ZERO,
 703         let_if_seq::USELESS_LET_IF_SEQ,
 704         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 705         literal_representation::LARGE_DIGIT_GROUPS,
 706         literal_representation::UNREADABLE_LITERAL,
 707         loops::EMPTY_LOOP,
 708         loops::EXPLICIT_INTO_ITER_LOOP,
 709         loops::EXPLICIT_ITER_LOOP,
 710         loops::FOR_KV_MAP,
 711         loops::NEEDLESS_RANGE_LOOP,
 712         loops::WHILE_LET_ON_ITERATOR,
 713         map_clone::MAP_CLONE,
 714         matches::MATCH_BOOL,
 715         matches::MATCH_OVERLAPPING_ARM,
 716         matches::MATCH_REF_PATS,
 717         matches::MATCH_WILD_ERR_ARM,
 718         matches::SINGLE_MATCH,
 719         methods::CHARS_LAST_CMP,
 720         methods::GET_UNWRAP,
 721         methods::ITER_CLONED_COLLECT,
 722         methods::ITER_SKIP_NEXT,
 723         methods::NEW_RET_NO_SELF,
 724         methods::OK_EXPECT,
 725         methods::OPTION_MAP_OR_NONE,
 726         methods::SHOULD_IMPLEMENT_TRAIT,
 727         methods::STRING_EXTEND_CHARS,
 728         methods::UNNECESSARY_FOLD,
 729         methods::WRONG_SELF_CONVENTION,
 730         misc::REDUNDANT_PATTERN,
 731         misc::TOPLEVEL_REF_ARG,
 732         misc::ZERO_PTR,
 733         misc_early::BUILTIN_TYPE_SHADOW,
 734         misc_early::DOUBLE_NEG,
 735         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 736         misc_early::MIXED_CASE_HEX_LITERALS,
 737         misc_early::UNNEEDED_FIELD_PATTERN,
 738         mut_reference::UNNECESSARY_MUT_PASSED,
 739         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 740         neg_multiply::NEG_MULTIPLY,
 741         new_without_default::NEW_WITHOUT_DEFAULT,
 742         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 743         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 744         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 745         ok_if_let::IF_LET_SOME_RESULT,
 746         panic::PANIC_PARAMS,
 747         ptr::CMP_NULL,
 748         ptr::PTR_ARG,
 749         question_mark::QUESTION_MARK,
 750         ranges::RANGE_MINUS_ONE,
 751         redundant_field_names::REDUNDANT_FIELD_NAMES,
 752         regex::REGEX_MACRO,
 753         regex::TRIVIAL_REGEX,
 754         returns::LET_AND_RETURN,
 755         returns::NEEDLESS_RETURN,
 756         strings::STRING_LIT_AS_BYTES,
 757         types::IMPLICIT_HASHER,
 758         types::LET_UNIT_VALUE,
 759         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 760         write::PRINT_LITERAL,
 761         write::PRINT_WITH_NEWLINE,
 762         write::PRINTLN_EMPTY_STRING,
 763         write::WRITE_LITERAL,
 764         write::WRITE_WITH_NEWLINE,
 765         write::WRITELN_EMPTY_STRING,
 766     ]);
 767
 768     reg.register_lint_group("clippy_complexity", vec![
 769         assign_ops::MISREFACTORED_ASSIGN_OP,
 770         booleans::NONMINIMAL_BOOL,
 771         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 772         double_comparison::DOUBLE_COMPARISONS,
 773         double_parens::DOUBLE_PARENS,
 774         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 775         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 776         explicit_write::EXPLICIT_WRITE,
 777         format::USELESS_FORMAT,
 778         functions::TOO_MANY_ARGUMENTS,
 779         identity_conversion::IDENTITY_CONVERSION,
 780         identity_op::IDENTITY_OP,
 781         int_plus_one::INT_PLUS_ONE,
 782         lifetimes::NEEDLESS_LIFETIMES,
 783         lifetimes::UNUSED_LIFETIMES,
 784         loops::EXPLICIT_COUNTER_LOOP,
 785         loops::MUT_RANGE_BOUND,
 786         loops::WHILE_LET_LOOP,
 787         map_unit_fn::OPTION_MAP_UNIT_FN,
 788         map_unit_fn::RESULT_MAP_UNIT_FN,
 789         matches::MATCH_AS_REF,
 790         methods::CHARS_NEXT_CMP,
 791         methods::CLONE_ON_COPY,
 792         methods::FILTER_NEXT,
 793         methods::SEARCH_IS_SOME,
 794         methods::USELESS_ASREF,
 795         misc::SHORT_CIRCUIT_STATEMENT,
 796         misc_early::REDUNDANT_CLOSURE_CALL,
 797         misc_early::ZERO_PREFIXED_LITERAL,
 798         needless_bool::BOOL_COMPARISON,
 799         needless_bool::NEEDLESS_BOOL,
 800         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 801         needless_update::NEEDLESS_UPDATE,
 802         no_effect::NO_EFFECT,
 803         no_effect::UNNECESSARY_OPERATION,
 804         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 805         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 806         precedence::PRECEDENCE,
 807         ranges::RANGE_ZIP_WITH_LEN,
 808         reference::DEREF_ADDROF,
 809         swap::MANUAL_SWAP,
 810         temporary_assignment::TEMPORARY_ASSIGNMENT,
 811         transmute::CROSSPOINTER_TRANSMUTE,
 812         transmute::TRANSMUTE_BYTES_TO_STR,
 813         transmute::TRANSMUTE_INT_TO_BOOL,
 814         transmute::TRANSMUTE_INT_TO_CHAR,
 815         transmute::TRANSMUTE_INT_TO_FLOAT,
 816         transmute::TRANSMUTE_PTR_TO_PTR,
 817         transmute::TRANSMUTE_PTR_TO_REF,
 818         transmute::USELESS_TRANSMUTE,
 819         types::BORROWED_BOX,
 820         types::CAST_LOSSLESS,
 821         types::CHAR_LIT_AS_U8,
 822         types::OPTION_OPTION,
 823         types::TYPE_COMPLEXITY,
 824         types::UNIT_ARG,
 825         types::UNNECESSARY_CAST,
 826         unused_label::UNUSED_LABEL,
 827         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 828     ]);
 829
 830     reg.register_lint_group("clippy_correctness", vec![
 831         approx_const::APPROX_CONSTANT,
 832         array_indexing::OUT_OF_BOUNDS_INDEXING,
 833         attrs::DEPRECATED_SEMVER,
 834         attrs::USELESS_ATTRIBUTE,
 835         bit_mask::BAD_BIT_MASK,
 836         bit_mask::INEFFECTIVE_BIT_MASK,
 837         booleans::LOGIC_BUG,
 838         copies::IF_SAME_THEN_ELSE,
 839         copies::IFS_SAME_COND,
 840         derive::DERIVE_HASH_XOR_EQ,
 841         drop_forget_ref::DROP_COPY,
 842         drop_forget_ref::DROP_REF,
 843         drop_forget_ref::FORGET_COPY,
 844         drop_forget_ref::FORGET_REF,
 845         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 846         eq_op::EQ_OP,
 847         erasing_op::ERASING_OP,
 848         formatting::POSSIBLE_MISSING_COMMA,
 849         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 850         infinite_iter::INFINITE_ITER,
 851         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 852         invalid_ref::INVALID_REF,
 853         loops::FOR_LOOP_OVER_OPTION,
 854         loops::FOR_LOOP_OVER_RESULT,
 855         loops::ITER_NEXT_LOOP,
 856         loops::NEVER_LOOP,
 857         loops::REVERSE_RANGE_LOOP,
 858         loops::WHILE_IMMUTABLE_CONDITION,
 859         methods::CLONE_DOUBLE_REF,
 860         methods::TEMPORARY_CSTRING_AS_PTR,
 861         minmax::MIN_MAX,
 862         misc::CMP_NAN,
 863         misc::FLOAT_CMP,
 864         misc::MODULO_ONE,
 865         open_options::NONSENSICAL_OPEN_OPTIONS,
 866         ptr::MUT_FROM_REF,
 867         ranges::ITERATOR_STEP_BY_ZERO,
 868         regex::INVALID_REGEX,
 869         serde_api::SERDE_API_MISUSE,
 870         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 871         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 872         swap::ALMOST_SWAPPED,
 873         transmute::WRONG_TRANSMUTE,
 874         types::ABSURD_EXTREME_COMPARISONS,
 875         types::CAST_PTR_ALIGNMENT,
 876         types::UNIT_CMP,
 877         unicode::ZERO_WIDTH_SPACE,
 878         unused_io_amount::UNUSED_IO_AMOUNT,
 879     ]);
 880
 881     reg.register_lint_group("clippy_perf", vec![
 882         bytecount::NAIVE_BYTECOUNT,
 883         entry::MAP_ENTRY,
 884         escape::BOXED_LOCAL,
 885         large_enum_variant::LARGE_ENUM_VARIANT,
 886         loops::MANUAL_MEMCPY,
 887         loops::UNUSED_COLLECT,
 888         methods::ITER_NTH,
 889         methods::OR_FUN_CALL,
 890         methods::SINGLE_CHAR_PATTERN,
 891         misc::CMP_OWNED,
 892         mutex_atomic::MUTEX_ATOMIC,
 893         types::BOX_VEC,
 894         vec::USELESS_VEC,
 895     ]);
 896
 897     reg.register_lint_group("clippy_nursery", vec![
 898         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 899         fallible_impl_from::FALLIBLE_IMPL_FROM,
 900         mutex_atomic::MUTEX_INTEGER,
 901         needless_borrow::NEEDLESS_BORROW,
 902         ranges::RANGE_PLUS_ONE,
 903     ]);
 904 }
 905
 906 // only exists to let the dogfood integration test works.
 907 // Don't run clippy as an executable directly
 908 #[allow(dead_code, print_stdout)]
 909 fn main() {
 910     panic!("Please use the cargo-clippy executable");
 911 }